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Topic review: Request : I would like to claim any needed licenses.

Public Domain or CC-0: Users can do whatever they want with your work.
CC-BY-3.0 + GPLv2: As above, but users must attribute you when modifying/redistributing your work.
CC-BY-SA-3.0 + GPLv2: As above, but users must allow modifying/redistributing of anything they create using your work. (note, it can also be another type, but we prefer one of the above.)

The license types can be used:

Public Domain or CC-0: Users can do whatever they want with your work. CC-BY-3.0 + GPLv2: As above, but users must attribute you when modifying/redistributing your work. CC-BY-SA-3.0 + GPLv2: As above, but users must allow modifying/redistributing of anything they create using your work. (note, it can also be another type, but we prefer one of the above.)